activity
20212025
most citedSolving a Dirichlet problem for unbounded domains via a conformal transformation

5 citations · 11 across the 9 of their papers we have counts for

collaborators

10 papers

math.AP2025

Sharp Hölder regularity of weak solutions of the Neumann problem and applications to nonlocal PDE in metric measure spaces

Luca Capogna, Ryan Gibara, Riikka Korte +1

We prove global Hölder regularity result for weak solutions to a PDE of -Laplacian type with a measure as non-homogeneous term: \[ -\text{div}\!\left( |\nab…

math.AP2024

Fractional -Laplacians via Neumann problems in unbounded metric measure spaces

Luca Capogna, Ryan Gibara, Riikka Korte +1

We prove well-posedness, Harnack inequality and sharp regularity of solutions to a fractional -Laplace non-homogeneous equation , with , , for d…

math.MG2024

On homogeneous Newton-Sobolev spaces of functions in metric measure spaces of uniformly locally controlled geometry

Ryan Gibara, Ilmari Kangasniemi, Nageswari Shanmugalingam

We study the large-scale behavior of Newton-Sobolev functions on complete, connected, proper, separable metric measure spaces equipped with a Borel measure with …

math.AP2024

On the Dirichlet-to-Neumann Map for the -Laplacian on a Metric Measure Space

Ryan Gibara, Nageswari Shanmugalingam

In this note, we construct a Dirichlet-to-Neumann map, from a Besov space of functions, to the dual of this class. The Besov spaces are of functions on the boundary of a bounded, l…

math.MG2023

Sharp Hausdorff content estimates for accessible boundaries of domains in metric measure spaces of controlled geometry

Sylvester Eriksson-Bique, Ryan Gibara, Riikka Korte +1

We give a sharp Hausdorff content estimate for the size of the accessible boundary of any domain in a metric measure space of controlled geometry, i.e., a complete metric space equ…

math.MG2023

Traces of Newton-Sobolev functions on the visible boundary of domains in doubling metric measure spaces supporting a -Poincaré inequality

Sylvester Eriksson-Bique, Ryan Gibara, Riikka Korte +1

We consider the question of whether a domain with uniformly thick boundary at all locations and at all scales has a large portion of its boundary visible from the interior; here, "…

math.FA2022★ 5 cited

Trace and extension theorems for homogeneous Sobolev and Besov spaces for unbounded uniform domains in metric measure spaces

Ryan Gibara, Nageswari Shanmugalingam

In this paper we fix and consider $(\Om,d,μ)$ be an unbounded, locally compact, non-complete metric measure space equipped with a doubling measure supporting a…

math.AP2022★ 5 cited

Solving a Dirichlet problem for unbounded domains via a conformal transformation

Ryan Gibara, Riikka Korte, Nageswari Shanmugalingam

In this paper, we solve the -Dirichlet problem for Besov boundary data on unbounded uniform domains with bounded boundaries when the domain is equipped with a doubling measure s…

math.MG2022★ 1 cited

Conformal transformation of uniform domains under weights that depend on distance to the boundary

Ryan Gibara, Nageswari Shanmugalingam

The sphericalization procedure converts a Euclidean space into a compact sphere. In this note we propose a variant of this procedure for locally compact, rectifiably path-connected…

math.MG2021

Accessible parts of the boundary for domains in metric measure spaces

Ryan Gibara, Riikka Korte

We prove in the setting of --Ahlfors regular PI--spaces the following result: if a domain has uniformly large boundary when measured with respect to the --dimensional Hausdor…